The scientists recommend that studies to find out what side effects the medicine might cause.A．be done B．should doC．will be done D．are done 题目和参考答案——青夏教育精英家教网—

题目内容

The scientists recommend that studies ________ to find out what side effects the medicine might cause.

A．be done B．should do

C．will be done D．are done

【解析】A　[recommend后接宾语从句时，谓语动词用虚拟语气，should可以省略。此题中因为studies是动作的承受者，所以用被动形式。]

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